这辆车损坏严重，我们只能当废品卖。

The car was so badly damaged we could only sell it as ___scrap.

建筑周围堆满了废铁。

The building was surrounded by piles of ___scrap iron.

旧机器经常作为废品出售以回收有价值的零件。

Old machinery is often sold as ___scrap to recover valuable parts.